FM-quiz BasPhys

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1 of 14

Question1
Sound wave characteristics. What is hertz the SI unit of?
- Frequency
- Sound pressure
- Acoustic impedance
- Wave amplitude
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2 of 14

Question2
Attenuation. Insert the correct missing words: Attenuation depends on the ……….. the sound wave.
- distance travelled by
- wavelength of
- frequency of
- rarefaction of
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3 of 14

Question3
Reflection. What is the reflection of a sound wave at an interface in a medium a function of?
- attenuation
- acoustic impedance
- gain
- All of the above
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4 of 14

Question4
Transducer orientation. The image on the left shows correct and inverted orientation of the transducer. Which of the following statements are correct? Select all that apply.
- The probe in A is oriented correctly, and the probe in B is incorrectly oriented.
- The orientation indicator (OI) on the screen is correctly oriented in both A and B.
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Question
5 of 14

Question5
Depth and gain A. The image shows two ultrasound images, where B is an optimised image of A. How is B optimised ?
- Depth is decreased
- Depth is increased
- Gain is decreased
- Gain is increased
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6 of 14

Question6
Depth and gain B. The image shows two ultrasound images, where B is an optimised image of A. How is B optimised ?
- Depth is decreased
- Depth is increased
- Gain is decreased
- Gain is increased
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Question
7 of 14

Question7
Doppler. What is true regarding Doppler and blood vessels? Select all that apply.
- The Doppler effect is biggest when the transducer is placed perpendicular to an artery
- The Doppler effect is biggest when the transducer is placed as parallel as possible to the flow in an artery
- When the probe is placed on top of the radial artery at the wrist, and pointing proximal towards the shoulder, red colour is seen on the screen
- When the probe is placed on top of the radial artery at the wrist, and pointing distally towards the fingers, blue colour is seen on the screen
- When the probe is placed on top of a vein in the forearm and pointing towards the shoulder red colour is seen on the screen
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Question
8 of 14

Question8
Transmission of sound. Transmission of sound in a medium is due to …
- diffusion of the molecules in the medium
- electromagnetic interference between the molecules in the medium and the sound signal
- dissipation of heat in the medium
- vibration of the molecules in the medium
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Question
9 of 14

Question9
Rarefaction. Select the correct word to fill the gap: Rarefaction is regions of …….. of the sound pressure within the carrier medium.
- equalization
- decompression
- compression
- transmission
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Question
10 of 14

Question10
Match the phrase at the top with the correct option below to form true statements by dragging the answer into the answer box.
Sort elements
- acoustic impedance
- vacuum
- medium
- amplitude
- deeper than high frequencies
Place your answers
- Reflection is determined by
- The only place in which sound cannot travel is in a
- The substance or material that carries the wave is called a
- Maximum oscillation of a sound wave is called
- Low frequencies penetrate
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Question
11 of 14

Question11
Match the phrase at the top with the correct option below to form true statements by dragging the answer into the answer box.
Sort elements
- the use of ultrasound gel
- do not reflect sound waves
- synonymous with reflected sound
- diffuse reflection
- sound
Place your answers
- An example of impedance matching is
- Tissues with same acoustic impedance
- Echo is
- Scattering is
- Ultrasound is
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Question
12 of 14

Question12
Match the phrase at the top with the correct option below to form true statements by dragging the answer into the answer box.
Sort elements
- generates high voltage spikes of 100-900 V
- converts electrical energy to ultrasound waves
- along the long axis of the ultrasound beam
- in the plane perpendicular to the long axis of the ultrasound beam
- the piezoelectric crystals are arranged in a straight array
Place your answers
- The transmitter
- The transducer
- Axial resolution is the ability to separate two objects
- Lateral resolution is the ability to separate two objects
- In linear transducers
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Question
13 of 14

Question13
Match the phrase at the top with the correct option below to form true statements by dragging the answer into the answer box.
Sort elements
- no echo
- high intensity echo
- time
- amplitude
- in the focal zone
Place your answers
- In B-mode a dark area represents
- In B-mode a bright area represents
- In M-mode the x axis represents
- In M-mode the y axis represents
- The sound field is most narrow
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Question
14 of 14

Question14
Match the phrase at the top with the correct option below to form true statements by dragging the answer into the answer box.
Sort elements
- is abbreviated OM
- a 1.5 – 4 MHz multifrequency phased array transducer is recommended
- is on the right side of the screen
- is on the left side of the screen
- adjust gain at different depths of the ultrasound image
Place your answers
- The orientation marker on the transducer
- For FATE examination
- In cardiac ultrasound the orientation indicator (OI)
- In FAST ultrasound the orientation indicator (OI)
- Time gain compensation (TGC) can
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